You can share WebRTC stream with Wowza users.
1. Install Flashphoner RTMP SIP Gateway - it is Wowza extension, which able to establish Wowza - SIP/RTP connection.
2. Install Flashphoner Web Call Server 3 - it is WebRTC SIP Gateway that able to establish WebRTC - SIP/RTP connection.
So, you can initiate WebRTC call using such path:
WebRTC client -1-> Flashphoner WCS3 -2-> SIP Proxy -3-> Wowza+RSGW -4-> Wowza web client
At the point (4) you can connect multiple Wowza subscribers to the stream.
Finally you have the case:
1. Somebody publishes the WebRTC stream.
2. Wowza clients play the stream.